Stapling machine



ct. 27, 1936. W. G. PANKFONIN STAPLING MACHINE Filed Dec. l2, 1952 v 5 Sheets-Sheet 1 INVENTOR.

l 2 977A@ ATTORNEY? @cti 27, 1936. W. G. PANKONIN l 059ml STAPLING MACHINE 5 Sheets-Sheet 2 Filed Dec. l2, 1932 INVENTOR.

ATTORNEY;

@et 27, W36. w. G. PANKON'IN STAPLING MACHNE Filed Dec.4 l2, 1932 3 Sheets-Sheet 3 .man

ATTORNEY,

Patented y Oct, 27, 1936 f ovarianasTATEsV PATENT OFFICE s'rAPLnvc MACHJN William G. Pankoniii, Chicago, Ill. Appliation December 12, 1932,-seria1No. 646,346`

4s clanes.

This invention relates to an improvement in stapling devices of the type commonly employed in olces for the purpose of fastening together sheets of paper or the like.

In general, the object of the present invention is to provide a stapling device of this character capable of convenient manipulation for the purpose of carrying out a variety of stapling operations and which is certain and ,effective in its operation and is not liable to become jammed or to distort "the staples in an undesirable or uncontrolled manner its function of removing staples is more fullyA during any stapling operation. vFurthermore, the device may be' utilized for easily and cleanly removing the staples from papers when desired. g

The subject-matter relating to the device in disclosed and claimed in copending 'applications Serial Nos.v 646,848 and 62,614, filed Dec. 12,-

` vice comprises a base carrying an anvil and on which is mounted a beam or arm providing a magazine for the staples and a support for `the staple driving tool.

, pivotally supported o n the base and yieldably staple driving means may be readily removed;

held away from the same so that the papers to provi/des a support for staple removing means.

The present invention purposes an anvil having a plurality of `camming slots of diierent designs or shapes whereby different deformations or`bendings of`,the staples may be effected.'

The arm or beam carrying the staple driving tool has its `pivotal connectionwith thegbase readily adjustable to provide for the selective positioning of thelstaple driving tool jinI cooperative relation with any particular one of the several sets of camming grooves of the anvil.,

`If desired, the staple carrying arm with its asa unit from the4 base and used as a tacker. Such a toolis'useful and convenient in posting notices, tacking tags'to boxes, etc.

The action of the' staple driving tool is im- The arm -is shiftably orv proved and enhanched.. in several respects and particularly in the manner fof mounting and rguiding the staple driving tool, in the provision of means which insures full stroke actuation of lthe tool and in the provision of means to support vrtiv the body of the staple. and preclude undesir-` able bending thereof when it is `being forced through the papers and is having its legs .deformed Junder the influence of the driving tool and the camming slot ofthe anvil. In the event 10 any particular staple is improperly deformed or bent as it leaves the magazine and passes toward the papers to`be stapled, it is severed vinto vpieces and provision is made for the ejection of such pieces from the device, Jamming of the l5 device is thus avoided. f

In addition to the foregoing, the present invention .improves the structure and mounting of the spring drum employed for actuating the follower of. the staple magazine and improves 20,

the construction of the housing on which such` spring drum` is mounted and in which the plunger employed for actuating the staple drlv ing tool is supported.

Other objects and advantages reside incer` 25 tain novel features of the construction, arrangement and combination of parts which will be hereinafter morefully described and particularg- 1y pointed out in the appended claims, reference being had to the accompanying drawings, form- 30 ing a part ofl this specification, and in which:

Figure 1 is aview partly in side elevation and partly in longitudinal central vertical section' showing a stapling device embodying the present invention;

Figure 1a is a fragmentary. view showing a portion ofthe forward end of the arm or beam of the stapling device in side elevation with parts broken away and parts shown in section for the sake of illustration; g

Figure 2 is a fragmentary view in horizontal section taken on line 2-2 of- Figure 1;

'Figures 3, 4 and 5 are views in vertical section taken on lines 3-3, 4--4 and 5 5, respectively, of Figure 1; 45

Figure 6 is a view in top plan showing the base,

anvil and the mounting for the beam or arm with the beam or arm and parts carried. thereby removed; e 60 Figure '7 is a groupview inelevation showing three different ways in which the staples may be bent by the stapling. device;

Figurel 8 is a. fragmentary view in elevation y. Showing a .slightly modified mounting for the- Figure 9 is a fragmentary view partly in side elevation and partly in section showingA a still further modification of the spring drumlmount.- ing; i y

Figure 10 is a fragmentaryview in 'elevation further illustrating the spring drum mounting shown in Figure 9; i

Figure 11 is a detail view in section taken on line of Figure 1*;

Figure 12 is a perspective view showing theV partition-like bracket and associated elements employed withinthe main housing; y

Figure 13 is a fragmentary perspective view illustrating how the front of the main housing is pressed out; n Figure 14 is a perspective view of the plunger section -showing the construction of the movable closure plate ofthe main housing.

Referring to the drawings, it will be seen that the stapling device comprises generally a base |adjacent one end of whichv is an anvil 2. At the end of the base opposite the anvil is a mounting 3 for a beam or arm 4. The beam orarm 4 provides the magazine 5 for the staples and a support or mounting for a staple driving tool designated generally at 6. Also organized with this arm. or beam 4 is staple removing means ydesignated generally at 1. l

Referring now to the anvil 2, itwillgbe see that it comprises a plateglike body portion I fitting flatly against the base and having downturned flanges. at its front and rear edges. The anges project down through and snugly fit in slots' |2 provided therefor in the base and have openings I3 extending therethrough to receive the endv portions of a holding spring I4. In the assembly, the holding spring I4 is exed or tensioned so that its intermediate portion frictionally engages the base and its /end portionsengage in the openings I3 to enable it to flrmly'fclamp the anvil in position. This method of fastening the anvil'in position facilitates assembly and also enables the operator to readily and conveniently replace a worn anvil with a new one when the necessity for replacement arises,

The anvil 2i is provided with a plurality of camming 'grooves or sets of camming grooves designated at I5, I6 and I1. Each'socalledset of camming grooves maycomprise a single camming groove or a plurality of grooves as desired. There is but one camming groove and in the structure shown this is disposed adjacent the forward end of the anvil and has its bottom so shaped as. to bend the legs of the staple in the manner indicated at I8 in Figure 7. There are two camming grooves I6 and the iloorsof such grooves are appropriatelyshaped to bend 'the legs of the staple in the manner indicated at I9 in Figure V'1. There are also' two grooves |1 shaped and designed to bend the legs of the staple in the manner indicated at and 20' in Figure '1.

The beam or arm 4 is4 of elongated form and spring drum employed to actuate the follower of lthe staple magazine;

comprises a core 2|, the upper portions of the sides of which are cut away as at 2| Side plates y22 are disposed along the sides of the core 2| and arev fastened thereto by transversely ex- 'tending rivets 23. 'I'he side plates 2 2 have inturnedanges 24 and the upper portions of 'these plates and their flanges `coact with the reduced or cut away upper portion of the core to form the staple'magazine 5.' v

The mounting 3 maybe constructed of sheet metal having a. body portion 25 resting flatly on -the base' I and held in such position by means of integral lugs 26 extending throughopen'ings in the base and having their lower ends swaged lor riveted oven? This fastening action may' be supplemented by means of a rivet 21. 'Integral with the body portion 25 are vertically extending side plates 28 which are spaced transversely `in the rearward end of the core 2| of the arm or beam 4, and in the side platesv22. 'I'he selected notch 30 is held engaged with the 'pivot bolt 29- under the influence of a spring designated generally at 32. The spring fits snugly against the inside flanges 28, has a portion secured to the base by the rivet 21 and has a bowed portion 33 engaging the core below the fixed pivot bolt 29. The spring also has a resilient portion 34 engaging a floating cross pin 35, the cross pin having its enlarged ends extending into and freely shiftable in slots 36 formed in the side plates. 'I'hisfloating cross pin 35 has its middle section of reduced diameter and the por-v tion 34 of the spring 32 engages its reduced secable with the 4underside of the core member 2| and the lower edges ofthe side plates 22 toy urge or swing the beam or arm 4 up away from the base tothe position shown in Figure 1. However, the portion 34 of the spring 32 may be readily flexed to permit the beam or arm 4 to "swing downwardly about its fixed pivot l29 as an axis and into cooperative relation to the anvil as will more clearly appearhereinafter.

At the forward end of the arm or beam 4 a main housing or mounting designated generally at 40 is provided. The housing 40 is constructed of sheet metal, of a single piece, if desired, and has a front wall 4|, side walls 42 and a partially open rear wall structure designated at 43 and l shown to advantage in Figure 3. 'Ihe lower portions of the front wall 4| and side walls 42 of the housing'overlap the forward end of the arm 4 The staple driving tool 8 is supported for ver-l tical sliding movement within the housing 40 and slides between portions of the front wall 4| and a notched guide 48 formed' integral with the lower l0 ment between the lugs 46a of the notched guide a'ooaogi end of a partition-like bracket 41 mounted within andsecured to the housing (see Figures 1 and- 12)- The bracket 41 has apertured ears 41a and 41b through which a rivet 41 passes, the ends 5 of the rivet 41' being secured to the side walls 42 o f the main housing. The securing action of l -the rivet 41' is supplemented by the action of/ lugs 61 on the bracket structure which abut the rear wall of the main housing and by the engage- 46 and the front wall of the main'housing. The notched guide 46 coacts with the front wall of the main housing to constrain the staple driving tool 6 to `vertical sliding movement inproper l5 alinement with a staple guideway |00 provided at i the forward end of the magazine. As shown in Figure 17, the flanges 24 terminate just short of the forward ends of the side plates 22, so that the` forward ends of the flanges 24, the portions of the side plates 22 projecting therebeyond and the adfjacent portion of the front wall 4l of the housing 40 coact in forming the/'guide H00. Access to the interior of the housing may be had by removing a resilient closure plate 4&3a having edges 25 normally engaged and held in a groove 41B and in an vopening 4lD providedin the rear wall of the housing and in the bracket structure 41, re-

spectively (see Figures `1 and 18).

The staple driving tool has its blade or staple engaging portion la of approximately the wit-lh e of the staple, has its intermediate portion larged by means of integral lugs 6b and above said lugs 6b has an integral narrow shank 6C. A tubular plunger 49 is provided and has an bpen ended socket 50 pressed out of its frontewall and through 'which the shank 6c of the tool 6 is extended. The shanleic is a snug t in the socket 50 and the upper portion of this shank is riveted as at 48 totthe plunger. The lugs 6b of the tool t abut the fowernd of the socket 50 thus sondly backing up the drivingytool. The plunger 49 Yand the driving tool 6 are4 fitted for sliding movement in the guide provided by the front wall 40 of the housing', by portions of the side walls 42 thereof and by the bracket structure 41, the

.socket 50 of the plunger being received in a guide groove 5I, formed by pressing out a portion of` the front wall of the housing. The upper land lower portions of this socket 50 are engageable 50 with shoulders 52 and 53 formed at the endfsfof the guide groove 5| whereby to limit the novement of the plunger and staple driving tool in either direction.y In order Athat the plunger may vbe made of the desired length and that its action may be smooth and eiective the back wall there- 65 plunger at its upper end. The spring may be centered by means of centering pins 58 and 59 carried by thebase portion 55 of the bracket 41 in thehead of knob 56 of the plunger, respectively., The plunger and staple driving tool are 70 depressed or actuated by the` person using the devicepressing down on 'the knob or head 56.

Means is provided for insuring full stroke actuation of the plunger nfor each'operation and in general consists of a vertical row of teeth' ofthe 75 common rack lvariety designated at 60, said teeth being formed on auportion struck out from the material comprisingthe plunger, and a cooperablespring biased pawl or detent designated at `6| which is rotatably vmounted on the rivet 41' f utilized to hold the bracket 41 in place.

The`

pawl 6l is precluded from being displaced later- ,ally along the rivet 41' by` virtue of its confinement between the ear 41HL and the adjacent side wall of the housing. YI-The other ear 41b atly engages the opposite side wall of the housing. Proper spacing of the ear 41a from the adjacent sidewall of the housing 4is insured by the provision of an angular :pacing lug 41c`wi1ich is angled or olset backwardly to clear rthe rack teeth B0 but .wlrich extends laterally sumciently to engage the adjacent side wall of the housing.

The detent. 6l has a disc-like body `portion 62 and the 'portion thereof adjacent the teeth (il)y `has a radially extending tooth or projection 63.

, A portion of the disc-like body 62 vspaced from its tooth 63 has an integralfhook 64 interconnected with one end of` a rectractile spring 65, the other end of, which spring'is interconnected 'with a xed hook 66 integral with an extension 61 of the bracket 41. When the plunger is elevated the tooth 63 of the detent is horizontally disposed as shown in Figure 1 with the lower end of the roweof teeth 66 positioned just above the tooth or projection-63.

However, as soon as the plunger isdepressed the teeth of the row engage the projection or dtooth 63 to partially rotate the detent 6l a/gainst the action of its spring, thereby shifting the projection 63 from horizontal positionto a position in which it inclines downwardly ,toward the row of teeth 60.

`In such inclined position the tooth 63 is-efiect-ive to prevent `upward movement of the plunger 49 and driving tool 6 but it lsnaps over the teeth freely and allowing downward movement. When the plunger has been fully depressed the upper en d of the row of teeth 60 pass below the`projection or tooth 63 of the detent andthe 'springV` swings the detent back to"horiz`ontal position,

in which position itf'plays freely overthe teethv 60 during the return or upward movement of the plunger. The action of the detent 6I and teeth 60 is such` that should the loperator depress the plunger" only part way it will be held only partly depressed. and to complete the stapling operation he must continue the downward movement of the plunger to the full extent of its movement. Likewise the yplunger must be returned to its fully elevated position `before it can be pressed downwardly. The bracket 41 is cut away as 'at 41d to afford clearance for the rack.teeth,60 and detent 6l. A

The staples in the magazine '5 are designated at S and they are fedv through the` magazine under the inuenc'eof a follower 10, the follower 4being inthe form of an inverted channel and having its anges 1I slidably interfitted between j the cut away portions 2l of the core and the opposite portions of the side Aplates 22 of the magazine. r The'body portion of lthe follower which interconnects the flanges isy pressed upwardly or offset as indicated at 12 and such upwardly o'set portion slides between the flanges 2( of the side plates of the magazine.

Feeding motion is imparted to the follower by means of a spring 15 which has its'inner end coiled about the hub or sleeve 16 of a spring housing "fand has its/ outer end doubled upon itself asm at"18 and is securely, though remov- 'ably attached to the slotted depending lugs 19 of a -spring connecting member B0. The

y 82 provided in the wings 83 of a bracket struc-v`v l ture 84 riveted to the follower 10. 'The lugs 19`v interflt with the bracket structure 84 to prevent side displacement of the spring connecting mem--y ber 80 in the assembly. 'I'he user may grasp the wings 8| between the thumb and index n'ger to retract the follower through the magazine or to engage or disengage the spring connector 80 with the notches of 'the bracket 83.

The housing 11 for the coil spring is, as stated, removably interconnected with the rear wall 43 of the main housing and for this purpose the y side plates of the housing 11 are shaped as shown and have the upper portions formed with notches 85, which, in the assembly, intert with the portions 86 of the rear wall of the housing. The

lower portion of the side plates of the housing 11 have an angular seat 81 formed therein which angular seat rests on the shoulder-like portions 88 and abuts the inner side of the projections 88A of the rear wall of the main housing in the assembly. Ribs 90 may beY pressed out from the side plates" of the housing`11 to reinforce these side plates `and facilitate their manipulation. The ribs 90 also act as stops when assembling the coil springs and their housings with the main housing.

With such a construction, the housing 11 may be grasped between the thumb and index finger and its lower portion may be inserted through the opening in the rear wall of the main housing to position the angular seat 81 behind the portions 88 with which they are engageable.v The housing 11 may be then partially rotated to swing part of it within `the confines of the main housing and bring the notches 85 into alinement with the portions 86 and then into interiitting relation therewith. The tension of the spring 15 will 'reianthese partsengaged and the housings assembled.. although a reverse manipulation from that,

just described may be readily carried lout to re'- move the spring housing 11 from its mounting on `.the main housing 40.

In lieu of forming the opening for thespring housing in integral extensions of the side plates 42 of the main housing 40, such an opening with portions or shoulders corresponding'y to the portion! 86 and 88 may be formed in a separate plate designated at 9| (see Figure 8), which plate has side flanges 92 and 93 overlapping the side plates 42 of the main housing and secured thereto by screws 94. The housing 11 of the spring arrangement is interconnected with such a plate 9|V in exactly the manner hereinabovedescribed.

A further modification of the mounting of the housing 11 of the spring arrangement on the main housing isillustrated in Figures 9 and 10 wherein a ilat piece of metal forms the core or hub of the housing. 'I'he coil spring is 'securely fastened to the flat core and wound to tension.

' The core is then staked securely to the housing to keep it from winding. The lends .of the flat core project` from either side of the housing providinglugs whichmaybe releasablyinteriltted along their end of the magazine and alined with the path of movement of the staple driving tool 6. In order that Athe staples may be held against accidental displacement and that their'body portions may 15 be supported and sustained against undesirable deformation during the stapli'ng operation andl especially when the legs of the staple are being bent in the camming groove of the anvil, a staple supporting member designated at |0|,is provided. 20

This supporting member |0'| is mounted for rotary and slight sliding movement on a supporting pin |02'. -The staple supporting member |01 is accommodated in a recessed portion 99 of staple between the side plates 22 at the forward the coi-e 2| and the supporting pin |02 therefor 25 extends transversely through this recessed portion. The recess 99 extends out through the frontend of the core. At its forward end it'is provided with a staple engaging lug |03 and a control' tooth |04. The member |0| also :has a 30 tail-like extension |05 formed with a ill-shaped notch |06 engaged by the pointed head |01 of a. spring actuated pin |08. The pin |08 is partially received within and is inuenced by a spring |09, one end of the spring engaging the 35 guide-wayi'l00 the body portion of the staple 4Q I comes into engagement with the supporting lug |03 and further downward movement of the driv- 'ing tool and staple results rst in a swinging of the supporting member |0| against the action ofy its spring |09. its forward end is urged upwardly and forwardly by the angle of the spring about the pin |08. y

The control tooth |04 is positioned just back. of the guideway |00 to allow a staple to pass and contact the tooth |03. Upon the descent of the 50 driver and swinging of the supporting arm |0| the tooth |04 enters the guide-way |00 and en. gages a rslot ||2 provided for-the purpose in the driver 6 as shown in Figure 15. In this position the staple body is held up against the bottom ofthe driver by the tooth |08 and is locked there positively by the control tooth |04 which is in l contact with the bottomedge of the slot ||2 of the driver 6. This position is taken rLby the arm |0| and the staple driver 6 before the ends of the staple legs are in contact with the material to be stapled. 'I'his spring 09need only be of the very ,light tension required to hold the arm in raised position as the staple bodyedo'es not depend upon .the influence of the spring for its support but is The supporting member |0| Iat 45 held up against the driver 6 positively and cannot l bend or break down while driving the staple through material. 'Ihe staple is thus supported 'positively until it has been driven through the 70 material and substantially clinched. Thereupon -the arm |0| swings about its fulcrum |02 and cams itself off of the staple as shown in Figure i6, the arm |0| moving slightly upward at this time untilP the tooth |04 engages the upper surface of V75 thelslot ||2, following which the arm |0| is carried up with the driving tool 6.

':uWith this construction more material and lharder-'material may vbe stapled than would be with av spring supporting means and the spring `|09 being ofv very light ytension allows the plunger 49 to movewith less resistance.

The purpose of the elongation of slot in supyportingarm- |0| ,at the forward part of pin |02 is through the guide-way |00 an-angle or sloping edge is provided at the front ends of the core 2| just below the cut-out portions 2|', shown at ||5 of Figure 1a, to facilitate the delivery ofsuch a staple in perfect condition. The bent leg or legs of the staple striking the angles of core 2| straighten the legs in the direction of the staple guideway and deliver the staple in usable condition. However, if the legs of the staple are bent.k

beyond the angleof the core 2|, it will take `a position as shown in Figure la. In this case the driver will force the `body of the staple down until foremost staples in the magazine .and prevent them from being fed successively to the guideway |00. i

The means provided for removing staples from papers consists of cooperable pairs of jaws designated at |20 and |2I. The jaws |20 are 'suitably secured to the lower portion of the front wall 4| of the main housing. The jaws |2| are carried by thelower end of' levers |22 cross connected by a connecting strap |23 and fulcrumed or pivotally mounted by means of apin |24 on supporting ears |25 attached to the front wall of the main housing. The upper portions of the levers |22 are also cross connected by a web structure |26 andare bentto'provide a handle portion |2l. A spring |20 yieldably holds the jaws .|2| in spaced relation to the jaws |20 but by pressing down on vthe handle |2'| the jaws |2| may be moved -over into cooperative relation to the jaws |20.

The jaws |2| have upper and lower camming surfaces |3|, and |30 while thejaws |20 have similar camming surfaces |32 and |33. To remove'a clinched staple from material the ma-l `terial with the staple thereinispositioned beneaththe stapleA removing device and the lever |21 is grasped 'and 'pressed downwardly. Since the tension of the spring |20 is greater than that of the spring 34 .downwardpressure rst lowers the staple carrying arm together with the staple removing device', until the points at the intersection-of surfaces |32 andL |33 engage one side of the body'of the staple adjacent the legs thereof.v The-outside overall width of the jaws |20 is equal to 'or just slightly less than the distance between' the insides of the legs of the staple.

.Now as pressure is.continued to be exerted upon the lever |21 the jaws |2| are swung 'inwardly so that their points enter`v in between the body portion of the staple'and the material and the vupper camming surfaces |3| and |32 draw the staple upwardly, the outer side surfaces-and the lower camming surfaces [|33 of the jaws |20act s directly and through the material straightening out the legs 'of the staple if they have been clinched the lower camming surfaces |30 riding upon the material with whichv the staple .is engaged in any'e'vent. A space designated at |30a is provided to permit the legs of the staple to straighten out in the event they have been clinched. When removing staples the arm 4 is so interconnected with the base that the space |30a is below the jaws \|20 and |2|. When the arm Y4 and the parts carried thereby are removed from the base for use as a tacker,l the staple removing device may also be employed in the manner described. f

In stapling, the operator places the papers or other` work to be stapled yon the anvil after the arm Has-been adjusted'to coact with the proper camming slot in the anvil andthen simply presses on the cam or head 56 of the plunger. Downward movement of the plunger causes the staple driving tool to move downwardly into engagement with the staple lying in the path of movement thereof with the -result that such staple isforce'd downwardly through the guide-way |00 and caused to penetrate andto be inter-clinched with the paper. The operation is'certain, smooth and reliable and'advantageous in the several respects heretofore described. l

Another important/'advantage of the present invention resides in its capacity for use as a tacker. To adapt it for such use it is merely necessary to disengage the staple carrying arm fromthebase.

While I have shown and described certain constructions as typical embodiments of the inven tion, it is to be understood that these constructions have been selected merely for the purposes parts without departing from the spirit of the invention or the scope of the subjoinedv claims.

The invention claimed is:- 1. In 'astapling machine, a base, a staple carrying arm, a staple driving tool mounted on said arm, and guiding and mounting means between said arm and Said base including a pivot, afhorizontal cross pin interconnected with. the base for 4limited floating movement andengaged with said arm and spring means acting between the' cross pinl and the base and pressing upwardly on the cross pinto yieidably maintainthe arm'in raised position.

"2. A stapling device comprising a base, an anvil.

thereon having a plurality ofcamming slots, a staple carrying arm,a staple driving tool mounted on said arm and. an adjustable pivotal lconnection'betweensaid arm and said base whereby said tool may 'be selectively brought into. coop 'erativ relation with any of said slots, said pivotal connection-comprising aixed pivot on said selected bearing engaged with said fixed pivot.

L3. A stapling device comprising abase,A thereon having a plurality of camming slots, a

staple carrying arm, a staple driving tool nimmt--v erative relation with any of said slots, said pivotal connection comprising a fixed pivot on said base, a plurality of bearings on said arm selectively cooperable with said xed pivot, spring means operable independently of any bias of said arm about said connection for holding any selected bearing engaged with said xed pivot, and spring means for urging the arm away from said base.

4. A stapling device comprising a base, ananvil thereon having a plurality of camming slots, a staple carrying arm, a staple driving tool mounted on said arm and an adjustable pivotal connection between said arm and said base whereby said tool may be selectively brought into cooperative relation with any of said slots, said pivotal connection comprising ailxed pivot pin mounted on the base, the rearward end of said arm being slotted and formed with aplurality of spaced bearings selectively cooperable with said xed pivot, and yieldable means operable inde` pendently of any bias of said arm about said connection'for holding any selected bearing engaged with said pivot. s,

5. A stapling device comprising a base, an anvil thereon having a plurality of camming slots, a staple carrying arm, a staple driving tool mounted yon said arm, an adjustable pivotal connection between said arm and said base whereby said tool may be selectively brought into cooperative relation with any of said slots, and neans foryieldably urging'the arm 'away from thebase and including a floating cross pin, engageable with the arm and a spring connected to the base and pressingupwardly on the floating cross pin.

6. In a stapling device, a 'movable staple driving tool, means for feeding a staple into the path where the staples are fed to the driving tool, said i arm being inclined upwardly and forwardly and terminating in a staple, bridge.A engaging portion l disposed in the path of movement of said staple l driving'. tool, said-arm including means .engagfeable with the tool during a driving'stroke thereof to lock the tool, staple and staple bridgeengaging Alili portion together. and means operable under conf" tinued driving impulse of the tool to move the bridge engaging portion of the arm out ofthe path of movement of said tool. l

'7. A stapling device comprising a staple carrying arm,- a staple driving tool mounted on-said an arm having a magazlnefor' preformed staples,y l `.means fordriving the staple into the work, means `,for successively feeding staples to driving f. means, a rigid support engageable withthe body' portionof the staples and for shitting movement, and 4means mounted on` said arm posil tively controlling the movement of said support l charged. u to. cause` it to preclude the body portion of the 14.,In a stapling d aolsaomv staple from bending or deforming while being l driven into the work.

9. A stapling device comprising astaple carrying'arm, a housing on said arm, a staple driving tool,v a movable hollow plunger mounted Within the housing andv connected to said tool for driving the staples, toothed means formed on a portion struck out from the material comprising said plunger, and a detent mounted on the housing and cooperablewith said toothed means to prevent movementof said plunger in one direction until after it has completed a full stroke lin the opposite direction. w

10. A stapling device comprising a staple carrying. arm having means providing a -magazine for the staples, a staple driving tool carried by said arm and operable to drive the staples one by one from the magazine, a follower for'advancing the staples through the magazine, means for imparting motion to the follower comprising a housing for enclosing a spring, a hub insaid housing, a spring within said housing coiled about said hub and having its inner end secured thereto, said housing having an opening, the outerend of said spring passing through said opening and secured to said follower and means detachably supporting said housing to said arm, said 'housing being removable from said arm while said tool is in operable position.

11. A stapling device comprising a staple carrying arm having means providing a magazine for the staples, a main housing carried by said arm, a staple driving tool guided in said housing and operable to drive the staples one by one from the magazine, a follower for advancing the staples ythrough the magazine, a unitary spring'drum assembly comprising a housing and a spring coiled therein and having one end connected to said follower, and means detachably securing the housing of-said spring drum assembly to said main housing whereby said spring drum assembly may be removed from said main housing while said tool is in operable position.4 e

l2. A stapling device comprising a staple carrying armhaving means providing a magazine for the staples, a main housing carried by said arm, a staple driving tool guided in said housing and operable to drive the staples one by one from the magazine, a follower foradvancing the staplesthrough .the magazine, a unitary 'spring drum ,assembly` comprising a housing and `ra spring coiled therein andf'having one end conconnected to the core and coacting therewith to provide a magaz'ineJfor` the staples, a, housing 'f1 to form a guideway through which staplespass as they are ejected from the magazine, a staple drivingtool guided in said `housing and operable "to drive the staples one byrone from the magazines,v said core having cutting edges adjacentvl said guide-waycooperable with said tool to sever` staples improperly displaced. from said guideway, said side plates and said housing having openings adjacent said cutting edges'through which-'severed portions'of 'such staples are dismounted on said arm and cooperable therewith 'lvice of the type having a 75 aiosaoaistaple. carrying arm and a driving tool mounted on the arm and) operable to eifect stapling, a

housing for the tool mounted on said arm and including a front wall, side walls and a rear wall,

a bracket structure in said housing having la portion 'engaging the drivingtool and portions engaging walls of the housing to aid in properly,

positioning the bracket structure, and al plunger Within said housing for actuating the, tool slidably intertted between portions ofthe walls of the housing and the bracket structure. y

15. In a stapling device of the type having a staple carrying arm and a driving tool mounted on the. arm and operable to effect'stapling, a housing for the tool mounted on said arm and including a front wall, side walls and a rear wall, a bracket structure in said housing having a portion engaging the driving tool and portions yengaging walls of the housing to aid in properly positioning the bracket structure, and a plunger within said housing for actuating the tool slid- 'ably' intertted between portions of the walls of l engaging walls of the housing to aid in properly positioning the bracket structure, ai plunger. foractuating the tool slidablyfintertted between portions of" the walls ofthe housing and said `,bracket structure, cooperable to'oth and detent structure for insuring al full stroke of the plunger and a rivet securedto and extending between the side walls of the housing to provide a support forsaid detent and also cooperable with said bracket structure to aid in in position. c Y

17,. In a stapling device of the type havinga staple carrying arm arida driving, tool mounted on the arm andoperable to eiect stapling: a` sheet metal housing for the tool carried by said arm. and a plunger for actuatingvthev tool slidablygtted in said housing, said" plunger havinga'J pressed out portion embracing the tool and said housing having a pressed out portion in vone of its wallsY affording a guide-way and stopstructure for the pressed out portion of said plunger.

v4ended socket kembracing the ldriving tool 'andl ,abutting said lugs toiprovid'e a., positive vand 18. In" a stapling` machine, a staple carrying arm, housing connected therewith, a movable plungerinthehosing anda staple driving tool,

Salo tool, having projecting 1ugs intermediateits ends, said plunger having apressed out open strong structural interconnection therebetween.

19. A-stapling device comprising a staple carry- 'ing arm, a staple driving tool, a plunger connected to said tool for actuating the same, a housingfor said plunger and tool mounted on the arm and including a front wall, side walls and a rear wall, 'a bracket structure in said housing having a portion' engaging the plunger and a portion engaging walls of the housing, cooperable tooth and detent'.v

structure for insuring afull stroke of the plunger.and a single means acting to hold thebracket l holding if.`

said wall and means lfor advancing staples structure in position and to provide a mounting for said detent. A ,f

20. lA stapling device comprisingx a' staple carrying arm having means providing amagazine for sta/ples, a main housing carried by said arm, a staple driving tool guided in said housing and operable' to drive staplesl oneby onefrom said magazine, said housing having a rear wall, a follower for advancing the lstaples through the magazine, means l for advancing the follower comprising a casing, aA spring within said casing andattached to said follower and means detachably securing said casing lto said rear wall, said casing being removable. rearwardly of said main housing and said driving tool.

21. Astapling device comprising a staple carrying arm havingmeans providing a magazine for staples, a main housing carried by said arm, a staple driving tool guided'in said housing and operable todrive staples 'ones by one from said magazine, said housinghaving arear wall, a follower for advancing the staples through the magazine, means for'- advancing the follower comprising a casing, a spring within said casing and attached to saidfollower, said casing having hook and notch means for detachably securing it tojsaid rear wall, a portion of said casing being suspended outside of said main housing/to provide a grip whereby said hook and notch means maybe operated.`

22. A stapling device comprising va ,staple carrying arm' having means providing a magazine for staples, a main housing carried on the forward yend of said arm, a staple driving tool guided within said housing and operable `to drive staples one by one fromsaid magazine, a follower for advancing'`v staples -through the magazine ,and means for advancing the follower comprising a casing, a spring coiled within said casing and attached to said follower, .and .means whereby said casing I,is d'etachably4 secured to said main housing, said casing being removable rearwardly from said housing.Y j l Y 23. vA stapling device comprising a staple carrying arm having means providing a magazine for staples, a mainv housingcarriediby said arm, staple driving means .carriedby said housing and operable to drive staples from said magazine,

said housing having aI rear wallfan opening in through Asaid 'magazine comprising a casing; said casing having an out1ine'offirregular shape whereby certain portions only of said Icasing are introduced into said opening and grip against 4the v edges rof .said opening, a lspring coiled within `said casingandsguided laterally thereby and a i follower attaclriedV to said spring andoperable in said magazine, the tension of said. spring maintaining said casing in proper relation to said opening. i l v 24. In astaplingdevice, a beam c magazine for.,v staples, a follower for advancing the staples along saidmag'azine,"upright members Von said magazine having notches, a casing having a Vhat core thereinand a spring coiled about said core'to operate Vsaid follower, the `ends pf (said flat core projectingbeyond the sides -of said casing and A forming means for .detachablyconnecting said core\ and said casing with said notches.

' 2,5. In a' stapling device, theI combination with a staple carrying arm having a. folldwer'for 'movi ing the staples alongsaid arm of upright menibers on saidarm provided with notches in their;l rearward edges and a spring mounted on a dat core, said core. detachablyV mounted -in said notches, said spring being connected to said follower to propel said follower in said magazine.

26.v In a stapling device, an operating arm, a base having parallel upright members to mount said operating arm, openings in the sides of said parallel members, a cross bar within said openings and spring means co-operating with saidl cross bar to elevate said operating arm, said openings limiting the upward movement of said cross bar. i l

27. In a stapling device, a beam magazine, a base, mounting means on said base for movably mounting said magazine, a vertically movable, horizontal member carried by said mounting means and spring means cooperating with said member to elevate said beam magazine to raised position, said spring means locking said horizontal member from lateral displacement.

28. In a stapling device, a base having bearing members, an operating arm mounted on said members, a cross bar mounted on-and having limited movement `with respect to said bearing members and spring means co-operating with said cross bar tomovably hold said arm in raised position.

29. In a stapling device, a movable arm, a base having bearing members, said arm having notched means engageable `with said members for mounting said arm and a`spring havingl one endl coperating with said arm to hold itin elevated position, the other end of said spring holding said notched means in operating relation to said bearl ing members. J

30. In a/stapling device, a-movable arm, a'base having guiding members for said arm, staple driving means on'said arm, an anvil on said base having a plurality of sets of camming grooves arranged for separate and diiIerent camming action, pivot and notched 'means between said guiding members and said movable arm to position said driving means in relation to a desired set of said camming grooves and spring means operable independently of any bias of saidv arm about said pivot and notched means for shittabiy locking said movable arm in operative relation to said guiding members.

31. In a stapling device havinga beam magazine for staples,` a follower for' advancing the staples along said magazine, said follower having a U shaped member thereon and a spring mounted to said beam magazine for propelling said follower' and having one end connected to an inverted `U shaped member, said U shaped membershaving interengaging portions to hold said members in connecting relation by the tension ci' said spring, said members being disconnectible when said tension i's counteracted.

32. In a stapling device of the type specified. a base, an anvil atly resting on said base, slots in said base, downwardly projecting iianges'onv said anvil projecting down through. and snugly y iitting in said slots, a.` holding spring frictionally lalso engaging said spring whereby said anvil is engaging said base, and means on said Ranges ilrmly clamped in position. 1

33. In a stapling device of the type having a staple carrying arm and a driving tool mounted ably fitted in said housing and guided by portions of said front and side wal1s,.an operating springwithin said plunger, said plunger having 75 formed on the rear thereof and at one side a 1.-

toothstructure, a bracket structure in said housing having a portion slidably engaging said plunger and forming a rear guide therefor, said bracket structure being spaced from one of said side walls to form an operating space for said tooth structure, a detent in said space cooperable withsaidftooth structure to insure a iull stroke of said plunger, and means securing said bracket structureto said housing and also providing a support for said detent. j

34. In a stapling device, a staple driving tool, a plunger foractuating said tool, a staple carryingarm having a housing for mounting said tool and said plunger, a bracket structure within said housing providing rear guiding means fior1` said tool and said plunger, said bracket structure being pivoted to said housing and having abuttingv means for positioning said structure within said housing.

35. In a stapling device, a vstaple driving tool, a staple carrying arm having a housing for mounting said tool, said housing having inwardly formed ilanges and a bracket structure forming rear guiding means lfor said tool pivotly mounted within said housing, said bracket structure having ears abutting said inwardly formed ilanges to align said bracket structure within said housing. w

36. In a stapling device, a staple driving tool, a staple carrying arm -having a housing for mounting said tool, co-operable tooth and detent structure for insuring a full stroke oi'. said' drivr ing tool, a bracket structure in said housing having a portion` engagingsaid driving tool and single means holding said bracket structure-in position and providing a mounting for said detent.

37. In a stapling device, staple driving means', a staple carrying arm having guiding means for said driving means, a rotatable and laterally shittable supporting member. directly carried by said arm and lockablejwith said staple driving means and a staple to positively support vthe bridge of said staple while ,being driven into material.

38. In a stapling device', a staple driving tool,

plunger and a staple driving tool having a nar-- row upper portion threaded through said pressed ont-portion, said tool having a lower wide portion. for staple driving purposes, saidyupper and lower portions `forming a shoulder intermediate the ends oi.' the tool, said shoulder abutting' said pressed out portion to secure a driving connection between said Itooland plunger. I Y i 40. In 'a stapling device ofthe-type having a Astaple carrying arm, a"reciprocal I plunger,` a

staple driving tool related to `said plunger and a housing for mounting vsaid plunger and said driving: tool; said housing .having a pressed ,out

'portion and said plunger'ffhaving--apressed,out

portion slidable-within said nrstmamed pressed utportionfwhereby said portionslform 'la ,stop

structure torsaid plunger.

a reciprocal plunger,A and ya. U shapedhousing -mounted onthe ,forward endoi' saidarmand 4'1. In astapling device, a staplejarrying arm.'

U shaped housing having a pressed out portion on one of its walls and means on said plunger slidable within said pressed out portion to form a stop structure for said plunger.

42. In a stapling machine of the type specied, a core upon which staples ride, side walls associated with said core and forming therewith a magazine for staples, a housing mounted on said side walls and forming therewith and With said core an ejection chute for staples, staple driving means operable in said ejection chute, said core having a cutting edge cooperable with said driving means for severing crooked and outof-line staples into pieces, said side walls and said housing being provided with alined openings adjacent said cutting edges whereby when a staple is severed into pieces some of said pieces will be discharged through said ejection chute and other pieces will fall out through said openings laterally of said magazine.

43. In a stapling device having staple driving means, a beam magazine for staples and guiding means for said driving means, a follower for moving the staples along said magazine, a housing, a spring within said housing to actuate said follower, a core within said housing about which said spring is coiled, spring tension mounting means between said housing and said guiding means, said mounting means being positioned beyond the coiling range of said spring.

44. In a stapling device, staple driving means, a housing for said means and having an open space, a guide plate mounted within said housing and forming guiding means for said staple driving means and a resilient plate having one end detachably connected to said guide plate and the other end having a snap action lock engageable with said housing to act as a cover for the open space of said housing.

45. In a stapling device, a staple carrying arm having an ejection chute through which staples are discharged, a plunger, a staple driving tool secured to said plunger and reciprocable in said chute, a housing having a front Wall and side walls, said plunger being guided by the inner surfaces of said walls, and a separate unitary bracket structure positioned between said side walls, saidv structure having a portion forming a rear guide for said plunger, and an offset portion forming a guide for said driving tool.

46. In a stapling device, a staple carrying arm having an ejection chute through which staples are discharged, a plunger, a staple driving tool secured to said plunger and reciprocable in said chute, a housing having a front Wall and side walls, saidplunger being guided by the inner surfaces of said walls, and a unitary bracket structure positioned between said side walls, said structure having a portion forming a rear guide for said plunger, and an oiset portion forming a guide for said driving tool, there being spring means to urge said plunger to raised position, said means being seated on said offset portion. WILLIAM G. PANKONIN. 

